noun
plural -changes
an occurrence in which people give things of similar value to each other :the act of giving or taking one thing in return for another thing [noncount]
[count] an occurrence in which people direct something at each other
an occurrence in which people give information to each other
an occurrence in which people use weapons against each other
[count] :an occurrence in which people talk to each other for a short time :a brief conversation
[count] a place where things or services are traded
an office or building in which telephone calls are connected
in exchange
If you give something to a person and get something in exchange, that person also gives something of similar value to you.
verb
-changes; -changed; -changing
[+ obj] to give something and receive something in return
to direct (words, looks, etc.) at each other
to return (a product) to a store and have it replaced by another product :to trade (something that has been purchased) for something else
US